Friend Flex
Fitness challenges for friends
Free · Designed for iPhone. Not verified for macOS.
Bring your friends. Beat your best. Create a fitness challenge, log your results, and compete on improvement from your own starting point. Free, with no ads.
A little friendly competition. A reason to keep going.
Friend Flex turns getting fitter into a challenge you share with friends. Pick what to measure, invite your group, and follow everyone's progress on one leaderboard.
COMPETE ON GETTING BETTER
Your starting point is your own. Category standings compare percentage improvement, so the contest is about making progress rather than simply having the fastest run or the most push-ups. Each category has a winner, with an overall leaderboard for the group.
YOUR FRIENDS. YOUR CHALLENGE.
Choose a challenge length from 7 to 365 days. Pick a few categories or build a bigger competition. Share the invite code, set your house rules, and decide how each category contributes to the overall score.
20 CATEGORIES, PLUS YOUR OWN
• Cardio: mile, 5K, 12-minute run, 20-minute ride, and 2K row
• Strength: push-ups, pull-ups, burpees, bench press, and squat
• Holds: plank, wall sit, and dead hang
• Power and flexibility: broad jump and sit and reach
• Body measurements: weight, waist, body fat, resting heart rate, and cardio fitness (VO₂ max)
• Custom categories: anything you can count, time, or measure
You choose what belongs in your challenge. Bench press and squat use the lift relative to body weight. Body measurements are averaged over several readings, with settings your group can choose.
KEEP THE GROUP CHAT MOVING
Use the Friend Flex iMessage app to log a result, share a leaderboard card, or send an invite right in your conversation. The encouragement and friendly rivalry can stay where your friends already talk.
SEE YOUR PROGRESS
Follow category standings, progress charts, and each participant's logged results. Keep your own log organized with editing and deletion. Use pounds or kilograms, miles or kilometers.
APPLE HEALTH, IF YOU WANT IT
Connect Apple Health for suggestions when there is a new body measurement or a qualifying run or ride that beats your best. Choose whether to log each suggestion. Nothing from Apple Health is automatically posted to your challenge, and the app never writes to Health. Your additional personal Health summary stays on your iPhone.
SIMPLE TO JOIN. FREE TO USE.
No separate app account, subscription, or ads. An iCloud account is required to share challenge results. Apple Watch and Apple Health are optional.
Friend Flex was previously called Fun 100. Existing challenges and results stay with you.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Fun 100 is now Friend Flex!
This update brings our new name and gold trophy icon, plus more ways to build a friendly fitness competition:
• Choose from 20 fitness and body-measurement categories, or create a custom category.
• Pick how the overall winner is scored and how much each category counts.
• Enjoy refreshed wording throughout the app and iMessage extension.
Your existing challenges, results, and invite codes stay with you. Keep improving together.
The developer, Sean Wade, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Sean Wade
- Size
- 4.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Frequent
Contests
Contains
User-Generated Content
Health or Wellness Topics
- Copyright
- © 2026 Sean Wade